Using a nationally representative sample of approximately 3,500 public schools, this study builds on and extends our knowledge of how ''minority threat'' manifests within schools. We test whether various disciplinary policies and practices are mobilized in accordance with Latino/a student composition, presumably the result of a group response to perceptions that white racial dominance is jeopardized. We gauge how schools' Latino/a student populations are associated with the availability and use of several specific types of discipline. We further explore possible moderating influences of school crime and economic disadvantage on punishment. We find that schools with larger percentages of Latino/a students are more likely to favor certain punitive responses and less likely to favor certain mild responses, as predicted by minority threat. The percentage of Latino/a students is also related to greater use of certain disciplinary responses in schools with less crime.